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  3. PETERSON M421A

M421A PETERSON MANUFACTURING Turn Signal Amber

M421A PETERSON MANUFACTURING Turn Signal Amber
Item Aspects
BrandPETERSON MANUFACTURING
Manufacturer Part NumberM421A
TypeTURN SIGNAL / PARKING LIGHT ASSEMBLY
Performance PartYES
UPC044464926988

Review PETERSON MANUFACTURING Sealed Oval Turn Signal Amber

The Peterson M421A Turn Signal is a high-performance aftermarket replacement turn signal assembly designed for various vehicle applications. This amber turn signal boasts a modern, sleek design that is sure to enhance the appearance of any vehicle while providing superior functionality.

The M421A Turn Signal comes with four (4) replacement amber turn signal bulbs, each with a 1156 bulb base. These bulbs emit a bright and clear amber light, ensuring that your turn intentions are easily visible to other road users. The bulbs have a long lifespan, reducing the need for frequent replacements, and they offer excellent color consistency, ensuring that your turn signals maintain a consistent amber hue.

The housing of the M421A Turn Signal is made from high-quality ABS plastic, which is known for its durability and resistance to corrosion. The lens of the turn signal is made from shatter-resistant glass, ensuring that it remains intact even in the event of an accident or impact. The signal lens is also treated with a scratch-resistant coating, preventing minor scratches and blemishes that can affect the clarity of the turn signal.

The M421A Turn Signal assembly is easy to install, with a plug-and-play design that allows for a straightforward replacement of your original turn signal assembly. The turn signal comes with all necessary mounting hardware, ensuring that you have everything you need for a successful installation. The turn signal also includes stainless steel mounting brackets, which offer superior strength and resistance to rust and corrosion.

The M421A Turn Signal assembly is also compatible with various vehicle makes and models, making it a versatile option for a wide range of vehicles. It is also available in various other colors, including clear and red, allowing you to customize the look of your vehicle to suit your personal taste.

In summary, the Peterson M421A Turn Signal is a high-quality aftermarket replacement turn signal assembly that offers superior functionality, durability, and customization options. Its sleek design, long-lasting bulbs, and scratch-resistant lens make it an excellent choice for anyone looking to upgrade their vehicle's turn signal system.

Pros and Cons of buying a Peterson M421A Amber Turn Signal Bulbs

Introduction:

The Peterson M421A turn signal bulbs are a popular choice for those seeking to upgrade their vehicle's turn signals. These bulbs offer an amber color, which is brighter and more visible than the standard yellow bulbs. In this analysis, we will discuss the advantages and disadvantages of purchasing a Peterson M421A bulbs.

Pros:

1. Brighter and More Visible: The primary advantage of the Peterson M421A bulbs is their increased brightness. This can lead to improved safety on the road, as other drivers are more likely to notice your turn signals.

2. Longer Lifespan: These bulbs are known for their durability and long lifespan. They are designed to last longer than standard bulbs, reducing the need for frequent replacements.

3. Easy Installation: The installation process for the Peterson M421A bulbs is straightforward and does not require any specialized tools or knowledge.

4. Cost-Effective: While the initial investment may be higher than standard bulbs, the longer lifespan makes these bulbs a cost-effective choice in the long run.

Cons:

1. Compatibility Issues: The Peterson M421A bulbs may not be compatible with all vehicles. It is essential to check the specifications of your vehicle to ensure these bulbs are a suitable replacement.

2. Higher Initial Cost: The Peterson M421A bulbs are more expensive than standard bulbs. This higher cost may be a deterrent for some buyers.

3. Potential Color Differences: Although the bulbs are designed to produce an amber color, some customers have reported variations in the intensity and hue of the light.

Conclusion:

The Peterson M421A turn signal bulbs offer several advantages, including increased brightness, longer lifespan, easy installation, and cost-effectiveness in the long run. However, potential drawbacks include compatibility issues, higher initial cost, and potential color differences. Ultimately, the decision to purchase these bulbs depends on your individual needs, budget, and vehicle compatibility.

Recommendation:

If you are looking for a brighter and more visible turn signal option, the Peterson M421A bulbs could be a suitable choice. However, it is essential to ensure compatibility with your vehicle and consider the higher initial cost. If these factors are not a concern, the Peterson M421A bulbs may be a worthwhile investment for improved safety and longevity.

Details:

Manufacturer: Peterson manufacturing, part number: M421A, condition: new: led dome light w/ motion sensor, 2 .180 bullet's 17.45 x5.75 multi-volt, white, bulk pack assembled in USA. See led versions on Peterson master catalog page 36-37. Meets requirements for rear turn signal and/or front park in either horizontal or vertical position. Kits include light, grommet, and right-angle plug.

Equipped with dual-filament, 2.1/.59 amp, 32/3 CAP bulb. Led version available. See 421r stop and tail, 416 back-up light for companion model's.

specifications turnsignalnut:

  • brand: Peterson Manufacturing
  • mpn: M421a
  • type: Turn Signal / Parking Light Assembly
  • performance part: Yes
  • upc: 044464926988

seller turnsignalnut:

  • city: san leandro, california
  • # reviews: 112741
  • rating: 99.8%

returns turnsignalnut:

  • time: 30 days
  • policy: returns accepted
  • paid by: seller

shipping turnsignalnut:

  • class: standard
  • type: fixed
  • service: standard
  • transit: 3-7 days

offer turnsignalnut:

  • in stock #: 5
  • options: ship-to-home
  • sold #: 11
  • prices: $5.22–$12.50
  • item condition:
    • New
    • New other (see details)
  • started: october 28, 2025
  • availability: in stock

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general turnsignalnut:

  • category: Auto Parts > Car Truck Accessories > Lighting Lamps > Turn Signal Assemblies
rating: 99.8% out of 100 based on 741 user ratings.
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